WOP2007

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Fuels

• Coal (C)
• Mostly pure carbon
• C O2 ? CO2
• Gasoline (C8H16)
• A mixture of hydrocarbons
• C8H16 12 O2 ? 8 CO2 8 H2O
• Natural Gas (CH4)
• Hydrocarbon (methane)
• CH4 2 O2 ? CO2 2 H2O
• Hydrogen (H)
• A chemical element
• 2 H2 O2 ? 2 H2O

Bad!
Good!
Greenhouse gases
water
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Snowflake Photos

• Courtesy of
• Prof. Kenneth G. Libbrecht
• California Institute of Technology
• http//snowcrystals.com

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• Its kind of funny. No two grains of sand are
  exactly alike, either. But nobody cares about
  that.
• -- Kenneth Libbrecht

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Thanks to Kenneth G. Libbrecht --Professor of
Physics at Caltech --and Chairman of the
Physics Department http//snowcrystals.com